According to TMZ.com and Access Hollywood, West had contacted Dr. Andre Aboolian of Beverly Hills in June to discuss a tummy tuck and breast reduction.

“She was interested in some cosmetic procedures and we had discussed that in order for her to go through with the procedures, which she was a good candidate for, she needed what’s called a medical clearance, which just about anybody over the age of 40 is required to have,” Dr. Aboolian explained to Access. “Because of Donda’s age, she was required to get some cardiac clearance to make sure her heart is in good shape to go through for the surgery.”

West died Saturday night at age 58 at Centinela Freeman Regional Medical Center in Marina del Rey, where paramedics took her after she stopped breathing at her home, according to Deborah Ettinger, a hospital vice president.

A spokesperson for the hospital also told Access Hollywood, “Donda West was brought into the emergency room at Centinela. She was unresponsive and in cardiac arrest. They tried to revive her and were unsuccessful.”

Preliminary information indicated she died from “complications of surgery,” Lt. Fred Corral told The Associated Press. An autopsy was expected to be conducted by Wednesday, Corral said.

Video: Kanye West's mother dies
“Kanye West, his family and friends would like to thank everyone for the outpouring of support and kind words that have come in from across the country since the death of his mother,” publicist Maureen O’Connor said in a statement. Reached by phone, she declined to provide details on West’s death.

Patricia Green, a consultant who has worked as a publicist for West in the past, had previously told news agencies that West died after cosmetic surgery. She backed away from those comments in later interviews with the AP, saying she was not sure of the cause because she had received conflicting information.

“I spoke to her about two weeks ago and she was supposed to see the internist for the medical clearance, the internist that I had recommended, that I work with,” Aboolian added. “But she never followed through as far as I know.”

Aboolian was concerned about a condition West had that may cause a heart attack during surgery, said Jo-Ann Geffen, the surgeon’s publicist, declining to elaborate because of patient privacy rights.

Geffen said she didn’t know if West had cosmetic surgery elsewhere.

In an interview with TMZ.com, Dr. Jan Adams revealed that he performed cosmetic procedures on West before she died. Adams said that West had consulted with him over a period of four months, and that she changed her mind numerous times before finally greenlighting the surgeries.

Adams also claimed that he did nothing wrong and shared with TMZ his opinion of Aboolian. “He is sleazy and manipulating the truth to elevate his own importance,” said Adams.

West was known for the strong bond she shared with her hip-hop star son. She was often seen by his side at parties and award shows. Kanye West often spoke of his close relationship with his mother, who raised him alone after her husband left when Kanye was 3.

The former chairwoman of Chicago State University’s English department, Donda West served as chief executive of West Brands LLC, the parent company of her son’s business enterprises. She also was chairwoman of the Kanye West Foundation, an educational nonprofit that works to decrease dropout rates and improve literacy.

The Associated Press, TMZ.com and Access Hollywood contributed to this report.